18343249 has 8 divisors (see below), whose sum is σ = 18873792. Its totient is φ = 17820240.

The previous prime is 18343229. The next prime is 18343267. The reversal of 18343249 is 94234381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18343249 - 2¹⁹ = 17818961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18343219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3252 + ... + 6874.

It is an arithmetic number, because the mean of its divisors is an integer number (2359224).

Almost surely, 2^18343249 is an apocalyptic number.

It is an amenable number.

18343249 is a deficient number, since it is larger than the sum of its proper divisors (530543).

18343249 is an equidigital number, since it uses as much as digits as its factorization.

18343249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767.

The product of its digits is 20736, while the sum is 34.

The square root of 18343249 is about 4282.9019367714. The cubic root of 18343249 is about 263.7295257498.

The spelling of 18343249 in words is "eighteen million, three hundred forty-three thousand, two hundred forty-nine".